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公开(公告)号：US20210254490A1
公开(公告)日：2021-08-19
申请号：US17118786
申请日：2020-12-11
Applicant: ROLLS-ROYCE plc
Inventor： Nicholas S. CRISTINACCE , Rory D. STIEGER
Abstract: A gas turbine engine (10) and method of operation. The gas turbine engine (10) comprises a heating device configured to heat a rotor disc (32, 72) of the engine (10). A method of operation the heating device comprises detecting an engine acceleration or deceleration event, or determining that an engine acceleration or deceleration event is imminent or may be imminent. On detection of an engine acceleration or deceleration event, or in advance of the engine acceleration or deceleration event, increasing turbine rotor disc heat input to raise a temperature of the turbine rotor disc or reduce a cooling rate of the rotor disc.
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